Use an appropriate salutation.
Dear Editor,
Inform the reader what the letter is responding to.
I am writing in response to Lucy McKay's article Online / Offline.
Briefly state your general reasons for writing.
I would like to take... dependent on the internet.
Introduce your first point and y support it with examples.
It is certainly true that... that these developments do not represent progress.
Introduce your second point and support it with examples.
Another view that was put... , at little or no cost.
Conclude and reiterate your point of view.
To sum up, it is true... My head is staying out of the sand!
Sign off appropriately.
Yours ffaithfully,